Portable storage device



FIG. 1 is a perspective view of the portable storage device.

FIG. 2 is a perspective view with the portable storage device being open.

FIG. 3 is a front elevational view of the portable storage device.

FIG. 4 is a rear elevational view of the portable storage device.

FIG. 5 is a top plan view of the portable storage device.

FIG. 6 is a bottom plan view of the portable storage device.

FIG. 7 is a side elevational view of the portable storage device; and,

FIG. 8 is a side elevational view of the portable storage device.

The broken lines shown along the interior of the device in FIG. 2 represent the bounds of the claim. The remaining broken lines illustrate portions of the article. None of the broken lines forms part of the claimed design. 

CLAIM The ornamental design for a portable storage device, as shown and described. 